Engine-starting jack.



PATE'NTED JULY 21, 1908.

' G. A. BULL.

ENGINE STARTING'JAGK. APPLICATION FILED APR.14,1908.

wane/sou GEORGE A. BULL, OF BUOYRUS, OHIO.

ENGINE-STARTING JACK.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed April 14,1908. Serial No. 427,095.

To all whom it may concern:

Be it known that I, GEORGE A. BULL, citizen of the United States, residing at Buoyrus, in the county of Crawford and State of Ohio, have invented certain new and useful Improvements in Engine-Starting Jacks, of which the following is a specification.

This invention has for its object to provide means for moving the fly wheel of an engine of the internal combustion type, and which means are readily adaptable to different sizes of fly wheels and adjustable to be used in varying positions according to the location of the engine and the surroundings.

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings.

While the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still the preferred embodiment isshown in the accompanying drawings, in which:

Figure]. is a perspective view of a jack embodying the invention, showing the man ner of using the same. Fig. 2 is a side view of the upper portion of thejack, the operating lever and lower portion of the stand being broken away, and showing a modified form of connecting means between the arms and the operating lever. Fig. 3 is a horizontal section of the ball and socket joint formed between the operating lever and the hanger. Fig. 4 is a front view of the arms and jaws mounted thereon, the pivot ends-0f the arms being broken away to show more clearl the relation of the parts. Fig. 5 is adet'ai perspective view of one of the jaws.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The jack comprises a stand 1 which may be of any construction and as shown com prises a base 2, a cap 3 and posts 4 connecting the cap and base. A raised portion 5 is provided upon the upper side of the cap 3 and 1s formed with a central depression to receive a circular projection 6 at the lower end of a post 7, which is mounted upon the stand so y as to turn freely about a vertical axis. A

set screw 8 connects the post 7 with the cap 3. An outer flange 9 at the foot of the post 7 overlaps the raised ortion 5 of the cap and provides a substantia support for said post.

A hanger 10 supports arms 11 and has connection with an operating lever 12 so as to move and adapt the parts to the direction of strain so as to equalize the work upon all parts of the device. The hanger 10 is of elbow form and may be connected with one end of the operating lever 12 either by a ball and socket joint, as shown in Figs. 1 and 3, or by means of a pivot joint, as indicated in Fig. 2. The operating lever 12 is mountedupon the up er end of the post 7 and may be connected t ereto in any manner. In the construction shown in Figs. 1 and 3, the inner end of the operating lever or that provided with the arms having the jaws attached-thereto, is provided with a socket 13 which is adapted to receive a ball 14 formed with or applied to the end of the horizontal member of the hanger 10, said socket being slotted to admit of a variety of movements of the hanger to obviate binding and enable the force exerted to be applied to the best possible advantage. The socket 13 is sectional, one of the parts being detachable and adapted to be secured in place by means of a bolt or other fastening 15. In the construction shown in Fig. 2, the hanger 10 is connected by means of a pivot fastening 16 with the short arm of the operating lever 12, and its vertical member is provided with a link 17 connected thereto by means of a pivot fastening 18.

The arms 11 have their inner ends flattened and formed with a proximately circular ortions which over ap and are connected by means of a pivot fastening 19. Shoulders 20 and 21 are formed at opposite sides of the pivot connection 19 and serve to limit the relative play of the arms 11.

A jaw 22 is mounted upon each arm ,11 and is adjustable thereon, being held in the adjusted position by 'means of a set screw 23 which is threaded into an opening formed in the end of the jaw and adapted to bear against a clamp 24 fitted into the eye 25 of the jaw. The clamp piece 24 has opposite ends bent to embrace opposite sides of the jaw 22 so as to prevent displacement of the clamp piece when the set screw 23 is loosened.

v the engine and the surroundings.

may be found most convenient and advantageous according to the relative position of Upon elevating the handle end of the operating lever 12, the jaws slide forward upon opposite edges of the rim 27 and upon pressing the handle end of the operating lever downward,

the bits 26 of the jaws take firm hold of the rim and move the same. By oscillating the operating lever, the fly wheel of the engine may be moved to bring the piston of the engine in the desired position for starting, which is at the compression end oi the cylinder.

It will be understood from the foregoing that the invention provides a simple and ef fective device admitting of the fly wheel and adjunctive parts of an internal combustion engine being easily and conveniently moved to attain the desired results, said device being adjustable according to the size of the fly wheel and the conditions met with in the location and construction of the engine so that the power expended for turning the fly wheel may be applied in a convenient and effective manner.

opposite sides of the pivot connection to limit the pivot movement of the arms, and an operating lever having said arms connected therewith.

2. In a device of the character specified,

'the combination of an operating lever, pivoted arms having connection with said operating lever, and jaws adjustable upon the arms, each of said jaws being approximately of elbow form, the bent ends being provided with bits, and said jaws having eyes through which the arms pass and in which they are secured at an adjusted position.

3. In a device of the character specified, the combination of a stand, a post mounted upon the stand and adapted to turn about a vertical axis, an operating lever mounted upon the post, and pivoted arms having connection with said operating lever and provided with jaws adjustable thereon and adapted to engage with opposite sides of the fly wheel to be moved.

In testimony whereof I afliX my signature in presence of two witnesses.

GEORGE A. BULL. [L.S.j'

WVitnesses:

V. B. HILLYARD, W. N. WooDsoN. 

